1129954457 has 2 divisors, whose sum is σ = 1129954458. Its totient is φ = 1129954456.

The previous prime is 1129954451. The next prime is 1129954493. The reversal of 1129954457 is 7544599211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 926350096 + 203604361 = 30436^2 + 14269^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129954457 - 2⁸ = 1129954201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1129954451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564977228 + 564977229.

It is an arithmetic number, because the mean of its divisors is an integer number (564977229).

Almost surely, 2^1129954457 is an apocalyptic number.

It is an amenable number.

1129954457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129954457 is an equidigital number, since it uses as much as digits as its factorization.

1129954457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 47.

The square root of 1129954457 is about 33614.7952098477. The cubic root of 1129954457 is about 1041.5664439924.

It can be divided in two parts, 11299 and 54457, that added together give a palindrome (65756).

The spelling of 1129954457 in words is "one billion, one hundred twenty-nine million, nine hundred fifty-four thousand, four hundred fifty-seven".